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Graduate Student Seminar - 10/23/2015

"Resolving Electrical Performance Variations of Polycrystalline Solar Cells at the Nanoscale"

by Elizabeth Tennyson

Friday, October 23, 2015 -- 12:00 p.m.
Large Conference Room, 1207 Energy Research Facility

Advisor:  Assistant Professor Marina Leite

Polycrystalline thin-film solar cells offer a low-cost, high-efficiency alternative to commercial silicon devices. However, the main limitation of these photovoltaic materials are their inherent high concentration of defects, such as grain boundaries. These defects act as nonradiative recombination sites for charge carriers and reduce the overall solar cell performance. In this presentation I will discuss how we are able to locally probe the photovoltaic performance through spectrally-dependent photocurrent and photovoltage measurements using novel optical microscopy techniques. Combining this electronic property imaging metrology with the local structure of the device could result in higher performance, next-generation polycrystalline thin-film solar cells.

For additional information about the IREAP Graduate Student Seminars, contact Peter Megson.

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